Feel free to contribute to the project. But before you start take a look at the issues because someone may already be working on it.
If you want to add to the project, feel free to do so. And if it's your first time helping out then take a look at the help wanted issues.
If you have a bug, or feature request you are free to make an issue.
Please make sure the issue is as precise as possible and as detailed as possible.
Sometimes it may be better to open two separate issues instead of trying to put it all into a single issue.